Pressure at the Summit of a Syphon

A syphon is a tube or pipe that allows liquid to flow from a higher level to a lower level, without the need for pumping. The pressure at the summit of a syphon is an important consideration when designing and using syphons.

Definition of atmospheric pressure

Atmospheric pressure is the pressure exerted by the weight of the atmosphere on a given surface. It is also known as barometric pressure, and it is measured in units of force per unit area, such as pounds per square inch (psi) or pascals (Pa).

Explanation

The pressure at the summit of a syphon is less than atmospheric because the liquid column in the syphon creates a negative pressure, known as a partial vacuum, at the highest point of the syphon. This negative pressure reduces the pressure at the summit of the syphon below atmospheric pressure.

The pressure at the inlet of the syphon is higher than the pressure at the outlet because of the difference in height between the two points. This pressure difference causes the liquid to flow from the higher point to the lower point through the syphon.

The pressure at the summit of the syphon is important because it affects the flow rate and efficiency of the syphon. If the pressure at the summit is too low, the syphon may not work properly, and if the pressure is too high, the syphon may become overloaded and fail.

Conclusion

In conclusion, the pressure at the summit of a syphon is less than atmospheric because of the negative pressure created by the liquid column in the syphon. This pressure difference allows the liquid to flow from a higher point to a lower point without the need for pumping. The pressure at the summit is an important consideration when designing and using syphons.